Strip-folding mechanism.



Patented Oct. 17,1916.

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E. CLAVIEZ.

STRIP'FoLmNG MECHANISM.

APPLICATION FILED AUG.G| i912.

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E. CLAVIEZ. STfIP FOLDING MECHANSM, APPLICATION FILED Aua; 1912.

Patented Oct 17', 1916.

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EMIL CLAVIEZ, `OF ADORE, GERMANY, ASSIGNOR TO AMERICAN TEXTILOSE COMPANY, OF BOSTON, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS.

STRIP-FOLDING- MECHANISM.

Specieation of Letters Patent. Patntd Get. 17, 1916.

Application iled August 6, 1912. Serial No. 713,523.

To all whom 'it may concern.'

Be it known that I, EMIL CLAVIEZ, a subject of the Emperor of Germany, and aresident of Adorf, in Vogtland, Kingdom of Saxony, German Empire, have invented certain new and useful Improvements in Strip- Folding Mechanism, of which the following is a specification.

This invention relates to mechanism for folding strips of exible material, such as paper, for forming into threads.

The object of my improvements is to provide mechanism of the class specified, simple in construction and efficient in operation. n

To these ends my improvements comprise parts and combinations of parts, illustrated in their'preferred embodiment in the drawings accompanying this specification, where- 1n'- Figure 1 is a front elevation ofmy mechanism. Fig. 2 is a corresponding side elevation. Fig. 3 is a plan view,'partly in sec-- tion, on line 3, 3 of Fig. 1, of the folding head. Figs. 4 and 5 are, respectively, front and side elevations, corresponding with Fig. 3. Figs. 6 and 7 are side and front elevations, respectively, of a modification of the folding head. Figs. 3 to 7 inclusive, are to a larger scale than Figs. 1 and 2. Fig. 8 is an enlarged diagrammatic cross section of one form of the folded strip. Fig. 9 is asimilar view of another form of the folded stri Iii the assembled view's of Figs. 1 and 2 I have illustrated asimple frame compris` ing base 2, uprightk 4 and spindle arm 5. The usual twisting spindle 6 has a bearing in said arm 5 and has its lower end in a step bearing in base 2. The usual pulley 7 is fixed to said spindle 6, and power for rotat ing said spindle may be communicatedk by the usual belt 8. Fixed to the upper en d of said spindle, for rotation therewith, 1s rotating head 9, and secured to saidspindle below said head is table 10, for supporting a coil of strip material 11. Said tableis preferably provided with a hub 12, on which the coil of material is centered, and between said coil and saidtable 10 is a sheet of material 13,.sucli asA leather or felt, for producing av slight friction between said coil and said table, thus applying tension to the strip. Fixed to said table, and remote from the axis thereof, is post 14 for guiding the strip from the coil to the folding means in'head 9. I .preferably pro-vide two oppositely disposed folders, indicated in a general way by 15, 16'on said head 9, for coaction w'ith a common grooved roll 23, mounted for free rotation just above and in close proximity to said folders 15, 16. Post 14 is for use in coaction with folder 15, and diametrally opposite I provide a similar Ypost 17, for use in coaction withfolder 16. Said folders are employed one at a time and are preferably proportioned foi1` different widths of strips, folder 15 being for a wider strip than folder 16.

The folder, as 15, is preferably made of sheet metal fastened as by screw 18 to arm 19 of head 9. Said folder is provided with guiding means for the strip, comprising opposite fianges 20, 20, and a pointed turning blade 21 reaching inwardly toward the axis of spindle 6 and terminating within groove 22 of roll 23. Said pointed turning blade 21 is located at one side of the medial planev (normal to the axis of the roll) of groove 22 and so far below the axis of the roll that a medial line, asQOl, through the point of said guide midway between flanges 20, 20, Fig. 4, will be substantially tangential to the bottoni of the groove; so that the strip of paper will pass off the point of said blade between a fiange of the roll and said medial plane through kthe bottom of the groove. Said pointed turning blade is etlicient to crease the strip lengthwise, midway its width, and to causeitto fold, somewhat, as it encounters the side of the groove of the roll. Thereupon said curved groove, in coaction with the circular curvature of thek is efficient for making a single fold, see Fig.

8, lengthwise in the strip before twisting said strip.

In Figs. 6 and 7 I have illustrated a modification for producing thedouble foldi ed stripr of Fig. 9. In this `modification I employ pointed turning blade 21, in coaction with primary grooved roll 23, and thereabove secondary pointed turning blade 210 in coaction with secondary grooved roll 230, blade 21 folding one edge a and blade 210 folding the other edge b. F or thus folding the strip, first near one edge and then nearthe other edge, the point of the first or lower folder, F ig. 7, is oifsetdownwardly from a medial line through the guide and inthe upper or second folder 210, that point is offset upwardly from such a medial line. 30

jBy the phrase folding the strip transversely upon itself as herein used is meant a continuous uniform folding as illustrated for instance in Figs. 8 and 9 and as opposed to irregular and varying folding.

I claim:

1. Stripk folding mechanism including in combination a grooved member, a guide for the stripand a pointed turning blade located at one side of the medial plane of the groove in said grooved member, the medial line of said turning blade being substantially tangential to the bottom of said groove thereby to cause the strip in passing tofold laterally about the point of said blade and deliver into said groove.

2. Strip folding mechanism including in combination, a turning blade provided at its delivery end with a point, means for guiding a strip over one side of such blade longitudinally thereof, means located forwardly of the blade for advancing the strip, means for applying tension to the strip rearwardly of the blade, and means for deflecting the strip out of its plane of travel toward the other side of such blade and for deiiecting the line of the -path of travel of the strip from its previous direction.

8. Strip folding mechanism including in combination a pointed turning blade for initiatingrthe fold in the strip and a grooved member around which the strip is led for completing andsetting the fold, said turning blade being located at one side of the medial plane of the groove in said grooved member, the medial line of said turning blade ybeing substantially tangential to the bottom of said groove.

4L. VStrip folding mechanism including in combination, creasing mechanism comprising a turning blade provided at its delivery end with a point, means for guiding a strip over one side of such blade longitudinally thereof, means for forwarding the strip, means for applying tension to the strip rearwardly of the blade, and means for deflecting the strip laterally of its plane of travel and toward the other side of the blade, and .for deflecting the creased and folded' strip to a path of travel at an angle to its previous path of travel.

5. Strip folding mechanism including in combination, a guide for the strip, a pointed turning blade, and a grooved roll mounted for free rotation contiguous to said blade, said turning blade being loc-ated at one side of the medial plane of the groove in said grooved roll and sufficiently below vsaid roll to deliver the strip into the groove thereof.

6. Strip folding mechanism including in combination, a primary groovedroll mounted for free rotation, a pointed turning blade having its point o'set to one side of the medial line of said blade, a secondary grooved roll mounted for free rotation above said primary roll, and a secondary pointed turning blade between said Aprimary and secondary rolls and having its point offset to that side of the medial line of said blade opposite to the offset of the point of the first blade, said pointed turning blades being located relatively totheir respective grooved rolls at one side of the medial planes of the grooves thereof and sufficiently below said rolls to deliver the strip tangentially into the grooves thereof respectively.

7.4 Strip folding mechanism including in combination a grooved roll mounted for free rotation and means terminating in the groove of the grooved roll for folding the strip laterally and for delivering it around the grooved roll7 said strip folding means beinglocated at one side of the medial plane of the groove in said grooved roll and sufliciently below said grooved roll to deliver the strip tangentially thereon.

8. Strip folding mechanism including in combination, a pair of grooved rolls adjacently mounted for free rotation, means contiguous to one roll for folding the strip laterally and delivering it around said roll and means between said rolls for further folding the strip laterally and delivering it around the other roll, said folding means being located at one side of the medial planes of the grooves in said rolls and positioned to deliver the strip tangentially within the grooves, all respectively.A

9. Strip folding mechanism including in e combination, a grooved member, a guide for of Saxony, German Empire, this 24th day the strip, and a pointed turning blade loof July, 1912, before tWo subscribing Wit-y cated at one side of the medial plane of the' nesses.

groove in said grooved member and su- EMIL CLAVIEZ. 5 oiently below said grooved member to de- Witnesses:

livery the strip tangentially thereon. A. C. ROTH, n

Signed at Plauen in Vogtland, Kingdom ROBERT HEINRICH VIER.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents Washington, D. C. f 

